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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"><title>GtkSocket</title><meta name="generator" content="DocBook XSL Stylesheets V1.73.2"><link rel="start" href="index.html" title="GTK+ Reference Manual"><link rel="up" href="PlugSocket.html" title="Cross-process Embedding"><link rel="prev" href="GtkPlug.html" title="GtkPlug"><link rel="next" href="SpecialObjects.html" title="Special-purpose features"><meta name="generator" content="GTK-Doc V1.9 (XML mode)"><link rel="stylesheet" href="style.css" type="text/css"><link rel="part" href="gtk.html" title="Part I. GTK+ Overview"><link rel="part" href="gtkbase.html" title="Part II. GTK+ Core Reference"><link rel="part" href="gtkobjects.html" title="Part III. GTK+ Widgets and Objects"><link rel="chapter" href="ch01.html" title="Object Hierarchy"><link rel="chapter" href="ch02.html" title="Widget Gallery"><link rel="chapter" href="WindowWidgets.html" 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href="glossary.html" title="Glossary"><link rel="index" href="ix01.html" title="Index"><link rel="index" href="ix02.html" title="Index of deprecated symbols"><link rel="index" href="ix03.html" title="Index of new symbols in 2.2"><link rel="index" href="ix04.html" title="Index of new symbols in 2.4"><link rel="index" href="ix05.html" title="Index of new symbols in 2.6"><link rel="index" href="ix06.html" title="Index of new symbols in 2.8"><link rel="index" href="ix07.html" title="Index of new symbols in 2.10"><link rel="index" href="ix08.html" title="Index of new symbols in 2.12"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2"><tr valign="middle"><td><a accesskey="p" href="GtkPlug.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td><td><a accesskey="u" href="PlugSocket.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td><td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td><th width="100%" align="center">GTK+ Reference Manual</th><td><a accesskey="n" href="SpecialObjects.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td></tr><tr><td colspan="5" class="shortcuts"><nobr><a href="#id4399232" class="shortcut">Top</a>  |  <a href="#id4399476" class="shortcut">Description</a>  |  <a href="#id4399353" class="shortcut">Object Hierarchy</a>  |  <a href="#id4399407" class="shortcut">Implemented Interfaces</a>  |  <a href="#id4399437" class="shortcut">Signals</a></nobr></td></tr></table><div class="refentry" lang="en"><a name="GtkSocket"></a><div class="titlepage"></div><div class="refnamediv"><table width="100%"><tr><td valign="top"><h2><a name="id4399232"></a><span class="refentrytitle">GtkSocket</span></h2><p>GtkSocket — Container for widgets from other processes</p></td><td valign="top" align="right"></td></tr></table></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">#include <gtk/gtk.h> <a class="link" href="GtkSocket.html#GtkSocket-struct">GtkSocket</a>;<a class="link" href="GtkWidget.html" title="GtkWidget">GtkWidget</a>* <a class="link" href="GtkSocket.html#gtk-socket-new">gtk_socket_new</a> (void);void <a class="link" href="GtkSocket.html#gtk-socket-steal">gtk_socket_steal</a> (<a class="link" href="GtkSocket.html" title="GtkSocket">GtkSocket</a> *socket_, <ahref="/usr/share/gtk-doc/html/gdk/gdk-Event-Structures.html#GdkNativeWindow">GdkNativeWindow</a> wid);void <a class="link" href="GtkSocket.html#gtk-socket-add-id">gtk_socket_add_id</a> (<a class="link" href="GtkSocket.html" title="GtkSocket">GtkSocket</a> *socket_, <ahref="/usr/share/gtk-doc/html/gdk/gdk-Event-Structures.html#GdkNativeWindow">GdkNativeWindow</a> window_id);<ahref="/usr/share/gtk-doc/html/gdk/gdk-Event-Structures.html#GdkNativeWindow">GdkNativeWindow</a> <a class="link" href="GtkSocket.html#gtk-socket-get-id">gtk_socket_get_id</a> (<a class="link" href="GtkSocket.html" title="GtkSocket">GtkSocket</a> *socket_);</pre></div><div class="refsect1" lang="en"><a name="id4399353"></a><h2>Object Hierarchy</h2><pre class="synopsis"> <ahref="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a> +----<ahref="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GInitiallyUnowned">GInitiallyUnowned</a> +----<a class="link" href="GtkObject.html" title="GtkObject">GtkObject</a> +----<a class="link" href="GtkWidget.html" title="GtkWidget">GtkWidget</a> +----<a class="link" href="GtkContainer.html" title="GtkContainer">GtkContainer</a> +----GtkSocket</pre></div><div class="refsect1" lang="en"><a name="id4399407"></a><h2>Implemented Interfaces</h2><p>GtkSocket implements AtkImplementorIface and <a class="link" href="gtk-gtkbuildable.html#GtkBuildable">GtkBuildable</a>.</p></div><div class="refsect1" lang="en"><a name="id4399437"></a><h2>Signals</h2><pre class="synopsis"> "<a class="link" href="GtkSocket.html#GtkSocket-plug-added">plug-added</a>" : Run Last "<a class="link" href="GtkSocket.html#GtkSocket-plug-removed">plug-removed</a>" : Run Last</pre></div><div class="refsect1" lang="en"><a name="id4399476"></a><h2>Description</h2><p>Together with <a class="link" href="GtkPlug.html" title="GtkPlug"><span class="type">GtkPlug</span></a>, <a class="link" href="GtkSocket.html" title="GtkSocket"><span class="type">GtkSocket</span></a> provides the abilityto embed widgets from one process into another processin a fashion that is transparent to the user. Oneprocess creates a <a class="link" href="GtkSocket.html" title="GtkSocket"><span class="type">GtkSocket</span></a> widget and, passes thethat widget's window ID to the other process, which then creates a <a class="link" href="GtkPlug.html" title="GtkPlug"><span class="type">GtkPlug</span></a> with that window ID.Any widgets contained in the <a class="link" href="GtkPlug.html" title="GtkPlug"><span class="type">GtkPlug</span></a> then will appearinside the first applications window.</p><p>The socket's window ID is obtained by using<a class="link" href="GtkSocket.html#gtk-socket-get-id"><code class="function">gtk_socket_get_id()</code></a>. Before using this function,the socket must have been realized, and for hence,have been added to its parent.</p><div class="example"><a name="id4399550"></a><p class="title"><b>Example 49. Obtaining the window ID of a socket.</b></p><div class="example-contents"><pre class="programlisting">GtkWidget *socket = gtk_socket_new ();gtk_widget_show (socket);gtk_container_add (GTK_CONTAINER (parent), socket);/* The following call is only necessary if one of * the ancestors of the socket is not yet visible. */gtk_widget_realize (socket);g_print ("The ID of the sockets window is %x\n", gtk_socket_get_id (socket));</pre></div></div><p><br class="example-break"></p><p>Note that if you pass the window ID of the socket to anotherprocess that will create a plug in the socket, you must make sure that the socket widget is not destroyeduntil that plug is created. Violating this rule willcause unpredictable consequences, the most likelyconsequence being that the plug will appear as a separate toplevel window. You can check if the plughas been created by examining the<em class="structfield"><code>plug_window</code></em> field of the<a class="link" href="GtkSocket.html" title="GtkSocket"><span class="type">GtkSocket</span></a> structure. If this field is non-<ahref="/usr/share/gtk-doc/html/liboil/liboil-liboiljunk.html#NULL:CAPS"><code class="literal">NULL</code></a>, then the plug has been successfully created insideof the socket.</p><p>When GTK+ is notified that the embedded window has beendestroyed, then it will destroy the socket as well. Youshould always, therefore, be prepared for your socketsto be destroyed at any time when the main event loopis running. To prevent this from happening, you canconnect to the <a class="link" href="GtkSocket.html#GtkSocket-plug-removed"><span class="type">"plug-removed"</span></a> signal.</p><p>The communication between a <a class="link" href="GtkSocket.html" title="GtkSocket"><span class="type">GtkSocket</span></a> and a <a class="link" href="GtkPlug.html" title="GtkPlug"><span class="type">GtkPlug</span></a> follows the <a class="ulink" href="http://www.freedesktop.org/standards/xembed-spec" target="_top">XEmbed</a>protocol. This protocol has also been implemented in other toolkits, e.g. <span class="application">Qt</span>, allowing the same level of integrationwhen embedding a <span class="application">Qt</span> widget in GTK or vice versa.</p><p>A socket can also be used to swallow arbitrary pre-existing top-level windows using <a class="link" href="GtkSocket.html#gtk-socket-steal"><code class="function">gtk_socket_steal()</code></a>,though the integration when this is done will not be as closeas between a <a class="link" href="GtkPlug.html" title="GtkPlug"><span class="type">GtkPlug</span></a> and a <a class="link" href="GtkSocket.html" title="GtkSocket"><span class="type">GtkSocket</span></a>.</p><div class="note" style="margin-left: 0.5in; margin-right: 0.5in;"><h3 class="title">Note</h3><p>The <a class="link" href="GtkPlug.html" title="GtkPlug"><span class="type">GtkPlug</span></a> and <a class="link" href="GtkSocket.html" title="GtkSocket"><span class="type">GtkSocket</span></a> widgets are currently not available on all platforms supported by GTK+.</p></div></div><div class="refsect1" lang="en"><a name="id4399728"></a><h2>Details</h2><div class="refsect2" lang="en"><a name="id4399738"></a><h3><a name="GtkSocket-struct"></a>GtkSocket</h3><a class="indexterm" name="id4399751"></a><pre class="programlisting">typedef struct _GtkSocket GtkSocket;</pre><p>The <a class="link" href="GtkSocket.html" title="GtkSocket"><span class="type">GtkSocket</span></a> structure contains the <em class="structfield"><code>plug_window</code></em>field. (This field should be considered read-only. It shouldnever be set by an application.)</p></div>⌨️ 快捷键说明
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